In a projectile motion the velocity

1. is always perpendicular to the acceleration

2. is never perpendicular to the acceleration

3. is perpendicular to the acceleration for one instant only

4. is perpendicular to the acceleration for two instants

Two bullets are fired simultaneously, horizontally and with different speeds from the same place. Which bullet will hit the ground first?

1. the faster one

2. the slower one

3. both will reach simultaneously

4. depends on the masses

The range of a projectile fired at an angle of 15° is 50 m. If it is fired with the same speed at an angle of 45°, its range will be:
1. 25 m
2. 37 m
3. 50 m
4. 100 m

Two projectiles A and B are projected with angle of projection 15° for the projectile A and 45° for the projectile B. If R_A and R_B be the horizontal range for the two projectiles, then

1. R_A < R_B

2. R_A = R_B

3. R_A > R_B

4. the information is insufficient to decide the relation of R_A with R_B